Morinda persicifolia Buch.-Ham. var. oblonga Pit.

Morinda persicifolia Buch.-Ham. var. oblonga Pit.; Photo by Lang Dân Chánh Hiệu 

Vietnamese name:

Nhàu nước

Uses: 

The whole plant is used to treat rheumatism, back pain, aching limbs, high blood pressure, and dysentery.